Valve



FIG. 1 is a perspective view taken from the top, front and right side of the valve embodying our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a top plan view thereof. 

The ornamental design for a valve, as shown and described. 